Govee Smart Light Bulbs, Wifi Bluetooth Color Changing Light Bulbs,, 4 Pack. Product Features 16 Million DIY Colors: Govee smart light bulbs own millions of color and 54 preset scene modes, you can explore your favored one or pick one suits your moods most, bringing yourself a real fantastic lighting experience(Working Voltage: AC 120V). Music Sync: Our smart light bulbs change color and brightness simultaneously when sounds are detected by the microphone on your phone. Note: only works when the microphone is not occupied. Download Govee Home App and enable microphone permissions. Smart Control: Govee color changing light bulbs make it possible to control your bulbs with simple voice commands. And you'd also feel free to turn your smart light bulbs on/off, adjust brightness, or change the colors, set scenes via Govee Home App. Group Control: Wanna manipulate your smart light bulbs and other Govee smart products at the same time? Just need to set scheme and and add them in, then they can be controlled together(please connect you bulbs with stable 2.4Ghz WiFi). Timer and Schedule: Applying the smart light bulbs to your daily routine now is easier than ever, with timer function and modes like Sunrise Sunset, you can set your bulbs to brighten when you wake up, and gradually dim when you fall asleep. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!